Please follow this template when making a Bug | Glitch report. Your in-game name: Nylu. Game mode that the bug and/or glitch is effecting: Prison. Description of the bug and/or glitch: Teleporting non-free rank players into the free world or nether. Video/screenshot of the glitch: Steps to reproduce the glitch: 1) Create an mcmmo party using the command /mcmmo:party create (name) 2) Get your party's level up. 3) Invite a non-free rank player into the party, have them accept the invite using the command /mcmmo:party join (name) 4) Have the non-free rank player type /mcmmo:party teleport (your username) whilst you are in the free world. 5) Accept their teleportation request. 6) Bob's your uncle.
Ehm, it's mcmmo:[P]arty in all the places where the emoji shows up. Minus the brackets, of course. Edit: The solution to this is quite simple, disable the ability to use the /mcmmo:[p]arty commands in the prison world, they are not needed there anyway.
I've resolved this issue by preventing players from being able to enter the free world without having the Free rank.